Past Kindle Book Deals but Still Must Read Books!
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959 past books matching Sci-Fi

Venomous
Penelope Fletcher
Romance · Sci-Fi
Penelope Fletcher’s Venomous (4.3 out of 5 stars on Amazon) is a dark, high-heat alien romance.

Venomous
Penelope Fletcher
Romance · Sci-Fi
Our take
Penelope Fletcher’s Venomous (4.3 out of 5 stars on Amazon) is a dark, high-heat alien romance. Claimed by a fierce Rök warrior in a brutal arena, Lumen must navigate space pirates, political enemies, and dangerous passions. Together, they face galactic war and the deadliest threat of all—betrayal from within his own kindred.
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About the book
Abducted from Earth and sold on a distant slave planet, Lumen is shackled, stripped, and placed on display before an alien horde. Told she will be claimed by the victor of a brutal contest, her fate seems sealed.
Venomous One, a warrior from Rök and enslaved gladiator, has long abandoned hope of finding a life mate. But when he sees Lumen in the arena, his soul demands he claim her. Winning her by Right of Might, he vows to protect and provide for her, no matter her alien-to-him appearance.
Together they face rescue, political condemnation, space pirates, and the looming threat of galactic war. Yet the deadliest danger may come from within Venomous’ own kindred, testing their bond, their survival, and their future.
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Head Above Water
J. Evermore
LGBTQIA+ · Romance
J. Evermore’s Head Above Water (4.6 out of 5 stars on Amazon) is a slow-burn MM sci-fi romance.

Head Above Water
J. Evermore
LGBTQIA+ · Romance · Sci-Fi
Our take
J. Evermore’s Head Above Water (4.6 out of 5 stars on Amazon) is a slow-burn MM sci-fi romance. Stranded in an alien jungle with no memory, a human crash survivor must trust the massive alien who claims he will protect him. With no common language, survival sparks into an unexpected and heart-stirring attraction.
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About the book
I wake up bloody, bruised, and with no memory of who I am. The flicker of emergency lights tells me one thing—I am in serious trouble.
Before I can get my bearings, something moves in the shadows. The monster that emerges is huge, terrifying, and very much not human. He decides I am his responsibility, whether I like it or not.
Trapped together in an alien jungle with no common language, we survive through gestures, crude drawings, and an unexpected connection that burns hotter with every passing day. He wants to get me home. I just hope I can figure out where that is.
I may never recover my past, but with him, I might discover a future worth remembering.
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Loving Captivity
RK Munin
Romance · Sci-Fi
RK Munin’s Loving Captivity (4.5 out of 5 stars on Amazon) is a tender yet high-stakes sci-fi romance.

Loving Captivity
RK Munin
Romance · Sci-Fi · First Contact
Our take
RK Munin’s Loving Captivity (4.5 out of 5 stars on Amazon) is a tender yet high-stakes sci-fi romance. Bought as a human “pet” by an alien prince battling the Fading, Sora finds comfort, trust, and forbidden affection. But when royal politics turn dangerous, love may be the biggest risk they can take. HEA guaranteed.
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About the book
After ten years of abuse, Sora is back on the auction block. With her youth gone and no valuable skills, she expects a short, grim future as a mine laborer or worse.
Searin, Prime Son of Talin and a contender for the throne, is battling the early stages of the Fading, an illness that drains life and will. Desperate, he decides to buy a human companion—rare, precious, and considered harmless among his people—to comfort him and keep the Fading at bay.
Sora doesn’t know what to make of her new master. He is gentle, protective, and treats her as a cherished pet, not a slave. But when family schemes threaten them both, Searin must choose between duty and keeping Sora safe in a galaxy that prizes power over love.
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Captive of the Horde King
Zoey Draven
Romance · Sci-Fi
Zoey Draven’s Captive of the Horde King (4.6 out of 5 stars on Amazon) delivers a steamy alien barbarian romance.

Captive of the Horde King
Zoey Draven
Romance · Sci-Fi
Our take
Zoey Draven’s Captive of the Horde King (4.6 out of 5 stars on Amazon) delivers a steamy alien barbarian romance. To save her brother, a human woman becomes the war prize of a ruthless Dakkari horde king. But instead of a concubine, he wants a queen. Passion, danger, and wild alien landscapes await in this fan-favorite series starter.
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About the book
On the harsh planet of Dakkar, survival means following the rules and avoiding the wrath of the alien Dakkari. I kept my head down, worked for my family, and never broke their laws.
My brother was not so careful. One reckless mistake brought a horde of barbarian warriors to our door, led by their fearsome horde king. To save my brother’s life, I offered myself as his war prize. I would warm his furs, travel with his horde, and never see my family again.
But the cold, battle-scarred warrior has plans I never expected. He does not want a concubine. He wants a queen.
Now I must decide if I can survive—and thrive—by his side, or if loving him will cost me everything.
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Owned by the Alien
Tammy Walsh
Romance · Sci-Fi
Tammy Walsh’s Owned by the Alien (4.4 out of 5 stars on Amazon) is a steamy, standalone alien romance.

Owned by the Alien
Tammy Walsh
Romance · Sci-Fi · First Contact
Our take
Tammy Walsh’s Owned by the Alien (4.4 out of 5 stars on Amazon) is a steamy, standalone alien romance. Abducted and bound for a breeding zoo, a human woman strikes a dangerous bargain with a powerful Titan captain. One night will save his life—but it might also make her his mate for eternity.
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About the book
Being abducted by aliens was bad enough. Finding out I was headed to a breeding zoo? Worse.
The so-called Titans are nothing like the little green men from movies. They are massive, beautiful, and terrifying—especially their captain. Hard, callous, and cruel, he commands fear from his crew. After an attempted mutiny leaves him poisoned, he comes to me for help.
He promises to return me to Earth if I heal him. The catch? The cure requires using my body for an entire night.
I should refuse. I should run. But something in his touch makes my pulse race, and I can’t ignore the pull between us.
Will one night bind me to him forever, or will I walk away with my freedom intact?
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Zaruv
Zara Zenia
Romance · Sci-Fi
Zara Zenia’s Zaruv (4.4 out of 5 stars on Amazon) launches the Aliens of Dragselis series with a sizzling sci-fi romance.

Zaruv
Zara Zenia
Romance · Sci-Fi
Our take
Zara Zenia’s Zaruv (4.4 out of 5 stars on Amazon) launches the Aliens of Dragselis series with a sizzling sci-fi romance. When a workaholic nurse treats an injured stranger, she has no idea he is a dragon-shifting alien prince. Secrets, attraction, and danger collide in this steamy, high-stakes love story with a guaranteed happy ending.
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About the book
Jennifer runs a free clinic on Vaxivia, dedicating every waking moment to caring for her people. She has no time for dating—until a mysterious patient changes everything.
Prince Zaruv was on his way to Dragselis when his ship was attacked, scattering him and his brothers across Vaxivia. Injured and in exile, he ends up in Jennifer’s care, hiding a dangerous truth: he is an alien dragon shifter.
Zaruv knows revealing himself could risk her help, but the pull between them is undeniable. When danger closes in and his secret is exposed, Jennifer must decide if she can love a man from another world.
In Zaruv, the first book in the Aliens of Dragselis series, passion and fate collide in a sizzling sci-fi romance.
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Ice Planet Barbarians
Ruby Dixon
Romance · Sci-Fi
Ruby Dixon’s Ice Planet Barbarians (4.6 out of 5 stars on Amazon) kicks off the wildly addictive sci-fi romance series.

Ice Planet Barbarians
Ruby Dixon
Romance · Sci-Fi · First Contact
Our take
Ruby Dixon’s Ice Planet Barbarians (4.6 out of 5 stars on Amazon) kicks off the wildly addictive sci-fi romance series. Stranded on a frozen alien world, Georgie’s only hope is Vektal—a massive, horned native who insists she’s his mate. Steamy, funny, and full of danger, this is the cult-favorite romance readers can’t stop talking about.
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About the book
Being abducted by aliens sounded like the worst thing that could happen to me. I was wrong.
Now I’m stranded on a frozen, dangerous planet after my captors’ ship breaks down, left with a handful of other terrified human women. The only native I’ve met is enormous, blue, horned, and far too interested in me.
Vektal saves my life, insists I’m his mate, and makes it clear he plans to keep me. He is protective, possessive, and way too tempting for my own good. But between deadly cold, alien predators, and no rescue in sight, I might have to rely on him to survive.
And maybe, just maybe, I’m starting to like the idea of being claimed by my barbarian.
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VORK
Ava Ross
Romance · Sci-Fi
Ava Ross’s Vork (4.5 out of 5 stars on Amazon) launches the steamy Mail-Order Brides of Crakair series.

VORK
Ava Ross
Romance · Sci-Fi · New Adult
Our take
Ava Ross’s Vork (4.5 out of 5 stars on Amazon) launches the steamy Mail-Order Brides of Crakair series. When human Evie is paired with a towering alien commander through an intergalactic matchmaking service, sparks fly. But when a rival warlord claims her as a prize, Vork must fight to keep her—and win her heart.
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About the book
Evie has sworn off husbands, especially the seven-foot-tall, scaly, green-skinned kind. But when she signs up for the Extraterrestrial Matchmaking Service on a dare, she’s paired with Vork—a spacefleet commander who is big, dangerous, and impossible to resist.
Vork has no interest in romance. His plan is simple: produce an heir and return to his life among the stars. Then one touch ignites a matebond, binding him to Evie in a way neither expected.
When a rival warlord challenges Vork with Evie as the prize, the stakes turn deadly. To keep her, Vork must risk everything, including his life.
In Vork, the first book in the Mail-Order Brides of Crakair series, passion meets danger in a scorching alien romance with a guaranteed happily ever after.
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Triplanetary
E. E. Smith
Sci-Fi · Space Exploration
E. E. “Doc” Smith’s Triplanetary (4.4 out of 5 stars on Amazon) launches the legendary Lensman saga, a Hugo finalist for Best All-Time Series.

Triplanetary
E. E. Smith
Sci-Fi · Space Exploration · Space Opera
Our take
E. E. “Doc” Smith’s Triplanetary (4.4 out of 5 stars on Amazon) launches the legendary Lensman saga, a Hugo finalist for Best All-Time Series. When alien invaders strip Earth of its iron, undercover agent Conway Costigan must sabotage their plans from inside their ship—or watch humanity be wiped out. A must-read for classic space opera fans.
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About the book
Far from Earth, the planet Nevia faces a crisis: its amphibious rulers are running out of iron, their most vital resource. Their solution is simple and ruthless. Using technology that can strip iron from anything—stone, machinery, even human blood—they set their sights on Earth.
The attack is swift and devastating. Pittsburgh is obliterated, thousands are dead, and three human captives are taken aboard the alien ship. Among them is Conway Costigan, an undercover operative for the Triplanetary Patrol.
Trapped deep within enemy territory, Costigan must turn impossible odds into humanity’s only hope. The fate of every man, woman, and child on Earth depends on one man’s courage and ingenuity.
Before Star Wars or Star Trek, there was E. E. “Doc” Smith’s epic vision of intergalactic war.
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Afterparty
Daryl Gregory
Dystopian · Hard Sci-Fi
What could possibly go wrong when printable designer drugs meet religion, guilt, and a scientist trying to outrun her own worst idea?

Afterparty
Daryl Gregory
Dystopian · Hard Sci-Fi
Our take
What could possibly go wrong when printable designer drugs meet religion, guilt, and a scientist trying to outrun her own worst idea? In Afterparty, Lyda Rose gets dragged into a chaotic chase across North America after a mind-altering drug she helped create sparks a new church and a trail of destruction. With rogue science, hallucinations, and a very bad problem getting worse by the minute, this is a sharp sci-fi thriller that feels clever, strange, and a little too plausible.
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About the book
A scientist goes on a mind-bending, violent chase across North America to save civilization from her creation in this science fiction thriller.
It begins in Toronto, in the years after the smart drug revolution. Any high school student with a chemjet printer and internet connection can download recipes and print drugs, or invent them. A seventeen-year-old street girl finds God through a new brain-altering drug called Numinous, used as a sacrament by a new Church that preys on the underclass. But she is arrested and put into detention, and without the drug, commits suicide.
Lyda Rose, another patient in that detention facility, has a dark secret: she was one of the original scientists who developed the drug. With the help of an ex-government agent and an imaginary, drug-induced doctor, Lyda sets out to find the other three survivors of the five who made the Numinous in a quest to set things right . . .
Praise for Afterparty
"I can't recommend this novel highly enough!" —Nancy Kress, Hugo Award–winning author of Probability Space
"This taut, brisk, gripping narrative, dazzlingly intercut with flashbacks and sidebars, oozes warmth and wit. A hugely entertaining, surprising and perhaps prophetic package that, without seeming to, raises profound questions about the human mind and the nature of perception." —Kirkus Reviews (starred review)
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Love and Other Paradoxes
Catriona Silvey
Romance · Sci-Fi
Love and Other Paradoxes blends time travel, romance, and fate in an uplifting romantic comedy.

Love and Other Paradoxes
Catriona Silvey
Romance · Sci-Fi · Time Travel · Time Travel Romance
Our take
Love and Other Paradoxes blends time travel, romance, and fate in an uplifting romantic comedy. When future tourist Esi sets out to change the event that ruined her life, she upends the destiny of poet Joe Greene. As they navigate love, ambition, and second chances, they must decide if the future is written or theirs to create.
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About the book
In 2005 at Cambridge University, aspiring poet Joe Greene dreams of leaving his mark on the world, though he doubts it will ever happen. Then Esi appears quite literally from the future. She is part of a time-travel tour to witness history’s greatest moments, and in her time, Joe is as famous as Shakespeare.
But Esi has a secret. She is not here to admire Joe’s work. Something that happens this year will destroy her life, and she is determined to change it. Going rogue from her tour, she enlists herself as Joe’s dating coach to help him win his future muse.
As plans go off course and Joe starts falling for Esi instead, both must decide whether destiny is fixed, or theirs to rewrite.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Hard Time
Jodi Taylor
Historical Fantasy · Sci-Fi
Fast-paced, hilarious, and brimming with charm, this is perfect for fans of Richard Osman, Jasper Fforde, and Doctor Who.

Hard Time
Jodi Taylor
Historical Fantasy · Sci-Fi · Time Travel
Our take
Jodi Taylor’s Hard Time thrusts rookie misfits Luke, Jane, and Matthew into the Time Police’s most dangerous mission yet. With temporal tourism spiraling out of control, these untested recruits must stop the greatest threat to history itself. Fast-paced, hilarious, and brimming with charm, this is perfect for fans of Richard Osman, Jasper Fforde, and Doctor Who.
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About the book
History is under constant threat from those foolish enough to try to change it. Temporal tourism is booming, offering the rich and reckless a chance to meddle in the past. It is illegal, dangerous, and extremely profitable—and the Time Police are determined to shut it down.
When their top agents are taken out, replacements are needed immediately. Enter Team Weird: Luke, Jane, and Matthew, three rookie officers still in training and not exactly by-the-book. They might lack polish, but their creativity and nerve may be exactly what is needed.
In Hard Time, Jodi Taylor delivers another witty, fast-paced adventure in the Time Police series, where the fate of history rests in the hands of the most unlikely heroes imaginable.
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